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Tool Talk Discussion Forum

biodiesel

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ric1

07-21-2007 18:27:56




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what exactly is biodiesel




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barnrat

07-25-2007 06:54:42




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 Re: biodiesel in reply to ric1, 07-21-2007 18:27:56  
I have a neighbor farmer that runs all his tractors off of pure biodiesel in the summer and 60% Bio diesel, kerosene and anti gel in the winter. He brews most of it from canola he grows on the farm and a little from waste vegetable oil. He has a processor that transesterfies it with methanol. I do the repair work on his equipment and I have to say these engines have 1000's of hours on them and I've yet to see a failure related to the fuel used. Also I have never seen engines so clean. Diesel engines were designed to run off of vegatable oil, not this garbage that is coming out of the pumps today that is supposedly better for the environment, yet makes my tractors smoke more then they ever did.

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Gary from Muleshoe

07-23-2007 20:15:35




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 Re: biodiesel in reply to ric1, 07-21-2007 18:27:56  
I am no expert on this by no means but an acquaintance of mine is a diesel mechanic for a Mack dealer and he said this is the worst thing you can do to a diesel engine. According to him an engine that is used to work hard will gum up and eventually start spinning main bearing. He said one company had bought 5 new trucks from them and was burning bio-diesel in them and withing one year all of them required engine work. Maybe they didn't have their ratio right.
Just thought I would share that with you. In his opinion bio-diesel is junk.

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railhead

07-23-2007 19:28:35




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 Re: biodiesel in reply to ric1, 07-21-2007 18:27:56  
Not disagreeing with the below posts because I am a dumba55 still paying whatever the pump says I pay for 15ppm ULSD but...a guy drove here two weeks ago in a old Mercedes and he said it had 100 % veg oil in the tank. He said it was only necessesary to have diesel in them to start them and he has a way to get his started on diesel and then burn all veg oil. I always heard you had to mix a lot of stuff and buy kits and be a chemist and be a rocket scientist etc etc etc to make bio D but he said not. I don't know if he knew what the heck he was saying. He didn't buy my tractor anyway. So..... ?????

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paul

07-22-2007 20:56:04




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 Re: biodiesel in reply to ric1, 07-21-2007 18:27:56  
Stuff at the pump, blended, is typically 2-20% processed vegtable oil blended with regular diesel.

Here in Minnesota it is mandated, 2% blend in all diesel fuel.

Mostly made from soybean oil, tho any veggie oil can be used. Sunflower, palm, canola, corn, peanut, etc.

A very small amount is made from animal lard or fat; but this stuff is more difficult to make blendable, & wants to cause more trouble in cold temps.

It is energy efficient; but the veggie oils are in demand for other things so it is rather costly to do so.

Then there are the home-brew folks who collect used fry cooker oils & either process them into a diesel fuel, or modify their vehicles (heaters, mostly) to run on the raw filtered oil.

--->Paul

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Ludwig

07-21-2007 19:22:02




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 Re: biodiesel in reply to ric1, 07-21-2007 18:27:56  
What Jim said.
Tyson makes it out of chicken guts to power their processing plants. The conversion process is called transesterfication.



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Jim K

07-21-2007 18:41:56




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 Re: biodiesel in reply to ric1, 07-21-2007 18:27:56  
Usually vegetable oil with the free fatty acids removed. Can be made from soybean oil corn oil any type vegetable oil.
I mix mine straight from the restaurant after filtering it and burn it mixed with diesel to thin it out. Two parts diesel to one part oil,
in my "02" f-350 diesel with no problems, and it runs noticibly quieter. No noticable power loss and smells like french frys going down the road.

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Ludwig

07-21-2007 19:24:46




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 Re: biodiesel in reply to Jim K, 07-21-2007 18:41:56  
Hey Jim,

33% seems like a good amount, how many miles have you done that for?
I did a demo at work for our "show your wheels day" where I ran around 22% but that was fresh soy oil from the store.
Do you run an extra water filter or did your truck already have one? My Mercedes does not so I'd be a bit nervous with used oil. I'd also be a bit concerned about salt buildup in the oil. Have you ever done a salinity test?
Do you get your engine oil analyzed? I'd be interested if say 3,000 miles with your 33% mix showed any big difference than 3,000 miles on straight diesel.

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Jim K

07-23-2007 19:05:53




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 Re: biodiesel in reply to Ludwig, 07-21-2007 19:24:46  
Gone about ten thousand mi, whith no modifications, no extra filters. I checked my fuel filter after about 5000mi,and it looked like it did on the day I put it in.



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